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1.1 root 1: /*
2: * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
3: *
4: * @APPLE_LICENSE_HEADER_START@
5: *
6: * The contents of this file constitute Original Code as defined in and
7: * are subject to the Apple Public Source License Version 1.1 (the
8: * "License"). You may not use this file except in compliance with the
9: * License. Please obtain a copy of the License at
10: * http://www.apple.com/publicsource and read it before using this file.
11: *
12: * This Original Code and all software distributed under the License are
13: * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
14: * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
15: * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
16: * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
17: * License for the specific language governing rights and limitations
18: * under the License.
19: *
20: * @APPLE_LICENSE_HEADER_END@
21: */
22: /*
23: * Copyright (c) 1996 Apple Computer, Inc.
24: *
25: * Created April 8, 1996 by Tuyen Nguyen
26: * Modified, March 17, 1997 by Tuyen Nguyen for MacOSX.
27: *
28: * File: tx.c
29: */
30: #include <sys/errno.h>
31: #include <sys/types.h>
32: #include <sys/param.h>
33: #include <machine/spl.h>
34: #include <sys/systm.h>
35: #include <sys/kernel.h>
36: #include <sys/proc.h>
37: #include <sys/filedesc.h>
38: #include <sys/fcntl.h>
39: #include <sys/mbuf.h>
40: #include <sys/socket.h>
41: #include <sys/socketvar.h>
42: #include <net/if.h>
43:
44: #include <netat/sysglue.h>
45: #include <netat/appletalk.h>
46: #include <netat/at_var.h>
47: #include <netat/routing_tables.h>
48: #include <netat/at_pcb.h>
49: #include <netat/aurp.h>
50: #include <netat/debug.h>
51:
52: /*
53: * Any AURP protocol or appletalk data (ddp) packets flowing through
54: * are inserted into the kernel aurpd process's (atalk) input queue.
55: * Assume here that we deal with single packets, i.e., someone earlier
56: * in the food chain has broken up packet chains.
57: */
58: void AURPsend(mdata, type, node)
59: gbuf_t *mdata;
60: int type, node;
61: {
62: struct aurp_domain *domain;
63: gbuf_t *m;
64: int msize = AT_WR_OFFSET+32+IP_DOMAINSIZE;
65:
66: /* Add the domain header */
67: if ((m = gbuf_alloc(msize, PRI_MED)) == 0) {
68: gbuf_freem(mdata);
69: dPrintf(D_M_AURP, D_L_WARNING, ("AURPsend: gbuf_alloc failed\n"));
70: return;
71: }
72: gbuf_wset(m,msize);
73: gbuf_rinc(m,AT_WR_OFFSET+32);
74: gbuf_cont(m) = mdata;
75: domain = (struct aurp_domain *)gbuf_rptr(m);
76: domain->dst_length = IP_LENGTH;
77: domain->dst_authority = IP_AUTHORITY;
78: domain->dst_distinguisher = IP_DISTINGUISHER;
79: domain->src_length = IP_LENGTH;
80: domain->src_authority = IP_AUTHORITY;
81: domain->src_distinguisher = IP_DISTINGUISHER;
82: domain->src_address = aurp_global.src_addr;
83: domain->version = AUD_Version;
84: domain->reserved = 0;
85: domain->type = type;
86: domain->dst_address = aurp_global.dst_addr[node];
87: atalk_to_ip(m);
88: }
89:
90: /*
91: * Called from within ddp (via ddp_AURPsendx) to handle data (DDP) packets
92: * sent from the AppleTalk stack, routing updates, and routing info
93: * initialization.
94: */
95: void AURPcmdx(code, mdata, param)
96: int code;
97: gbuf_t *mdata;
98: int param;
99: {
100: unsigned char node;
101: gbuf_t *mdata_next;
102:
103: if (mdata == 0)
104: return;
105: if (aurp_gref == 0) {
106: if (code != AURPCODE_DEBUGINFO)
107: AURPfreemsg(mdata);
108: return;
109: }
110:
111: switch (code) {
112: case AURPCODE_DATAPKT: /* data packet */
113: node = (unsigned char)param;
114: if (gbuf_next(mdata)) {
115: mdata_next = gbuf_next(mdata);
116: gbuf_next(mdata) = 0;
117: AURPsend(mdata, AUD_Atalk, node);
118: do {
119: mdata = mdata_next;
120: mdata_next = gbuf_next(mdata);
121: gbuf_next(mdata) = 0;
122: /* Indicate non-AURP packet, node id of peer */
123: AURPsend(mdata, AUD_Atalk, node);
124: } while (mdata_next);
125: } else
126: AURPsend(mdata, AUD_Atalk, node);
127: break;
128:
129: case AURPCODE_RTUPDATE:
130: AURPrtupdate((RT_entry *)mdata, param);
131: break;
132:
133: case AURPCODE_DEBUGINFO: /* debug info */
134: dbgBits = *(dbgBits_t *)mdata;
135: net_port = param;
136: break;
137:
138: default:
139: dPrintf(D_M_AURP, D_L_ERROR, ("AURPcmdx: bad code, %d\n", code));
140: }
141: }
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